10 Best Cordless Angle Grinders 2025 in the United States

The Milwaukee 2880-20 M18 FUEL Cordless Angle Grinder is a well-rounded tool designed for various grinding tasks, making it a solid choice for both DIY enthusiasts and professionals. With its brushless motor, this grinder offers an impressive no-load speed of up to 8,500 RPM, ensuring efficiency in cutting and grinding applications. It operates on an 18V battery, which is compatible with all M18 batteries, providing flexibility for users who already own Milwaukee tools.

One of the standout features is the Electronic Clutch that protects against kickback, enhancing user safety during operation. Additionally, it includes overload protection to extend the motor's life, making it a reliable investment over time. The anti-vibration side handle is another plus, contributing to user comfort, especially during prolonged use.

However, there are a couple of considerations. The grinder is sold as a tool only, meaning you will need to purchase the battery separately if you don’t already have one. This can add to the initial cost for new users. Also, while it is relatively lightweight at around 5 pounds, some users may still find it a bit bulky for extended overhead work. In terms of ergonomics, its compact design helps, but users looking for a more maneuverable option may want to try out other models. The 5-year warranty is a reassuring factor, indicating Milwaukee's confidence in the product's durability.

The DEWALT 20V MAX Cordless 4 1/2 Inch Paddle-Switch Grinder offers a solid mix of power, safety, and comfort for users needing a versatile grinder on the go. Its brushless motor delivers up to 850 horsepower and a maximum no-load speed of 9,000 RPM, providing strong cutting and grinding performance suitable for tough jobs like cutting rebar. The 20V battery system ensures good runtime, with up to 56 cuts on a half-inch rebar, although the battery itself is not included, so you'll need to have or buy one separately. At 4.81 pounds (bare tool), it’s not the lightest grinder in its class but remains manageable for extended use, helped by ergonomic design aimed at reducing fatigue.

Safety is a standout feature here, with DEWALT’s anti-rotation technology including a kickback brake and E-Clutch to prevent sudden tool movements, adding peace of mind during demanding tasks. The paddle-switch style is classic and familiar, but some users may prefer a different switch type based on personal preference. The grinder comes with handy accessories like a side handle and clip-on guard, enhancing control and protection. Its 4 1/2 inch disc size is standard for many metalworking tasks, balancing maneuverability and cutting capacity. This grinder represents a strong choice for those seeking a powerful, cordless tool with advanced safety features and reasonable ergonomics. Just be prepared to invest in batteries separately if you don’t already use DEWALT 20V Max tools.

The DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder is a solid choice for users looking for a powerful cordless tool in the angle grinder category. One of its key strengths is its ability to deliver up to 54% more power when paired with FLEXVOLT batteries, making it well-suited for demanding tasks. The inclusion of safety features such as the Kickback Brake and E-CLUTCH offers enhanced protection, quickly stopping the wheel in the event of a bind-up or pinch, which is crucial for maintaining user safety during operations.

Its compatibility with all DEWALT 20V MAX* and FLEXVOLT batteries means you can easily integrate it into your existing tool collection without needing to purchase new batteries. The E-Switch Protection is another noteworthy feature, ensuring that the grinder doesn’t accidentally restart after a power outage, which adds an extra layer of safety.

However, there are some drawbacks to consider. While it is lightweight at around 4.9 lbs, users who need to work for extended periods might still find it a bit tiring compared to other ergonomic options available in the market. Additionally, the lack of a battery and charger included with the tool can be a downside for those just starting out, as they will need to invest in these separately. The absence of a speed control option might also be limiting for tasks that require more precision.